302 



CYPERACEAE. 

 31. Carex typhinoides Schwein. Cat-tail Sedge. (Fig. 701.) 



Carex typhinoides Schwein. Ann. I,yc. i: 66. 1824. 

 Carex squarrosa var. typhinoides Dewey, Am. Journ. 



Sci. n: 316. 1826. 



Similar to the preceding species, but darker 

 green, the leaves much broader, often 4"-$" wide, 

 the similar bracts much overtopping the culm; 

 spikes 2-6, cylindric, very dense, I'-i^' long, 4"- 

 7" in diameter, often staminate at both ends, the 

 terminal one commonly tapering to a conic sum- 

 mit; basal staminate flowers much less numerous 

 than in C. squarrosa ; perigynia dull straw-color, 

 obovoid, ascending or the lowest spreading or re- 

 flexed, inflated, abruptly contracted into the slender 

 2-toothed beak, which is often upwardly bent ; scales 

 oblong -lanceolate, obtusish; achene ovoid-elliptic, 

 sharply 3-angled with concave sides, tipped with 

 the subulate straight style. 



In swamps, Quebec to Virginia, Louisiana and Mis- 

 souri. July- Aug. 





32. Carex trichocarpa Muhl. Hairy-fruited Sedge. 



Carex trichocarpa Muhl.; Willd. Sp. PI. 4: 302. 1805. 

 Carex trichocarpa var. fmberbis A. Gray. Man. Ed. 5, 



597. 1867. 

 Carex laeviconica Dewey, Ant. Journ. Sci. 24: 47. 1857. 



Culm usually stout and tall, smooth below, very 

 rough above. Leaves elongated, glabrous, rough- 

 margined, 2 // -3 // wide, the upper ones and the similar 

 bracts commonly overtopping the culm; staminate 

 spikes 2-6, long-stalked; pistillate spikes cylindric, 

 densely flowered except at the base, i / -4 / long, 5 // -8 // 

 in diameter, the upper sessile or nearly so and erect, 

 the lower slender-stalked and sometimes spreading or 

 drooping; perigynia ovoid-conic, pubescent or gla- 

 brous, prominently many-ribbed, 4 // -5 // long, i // -i|^ // 

 in diameter, tapering gradually into the stout con- 

 spicuously 2-toothed beak, the teeth somewhat spread- 

 ing; scale hyaline, acute or acuminate, one-half as long 

 as the perigynia or longer; stigmas 3. 



In marshes and wet meadows, Quebec to Michigan, 

 south to Georgia, Missouri and Kansas. June-Aug. 



(Fig. 702.) 



Carex aristata R. Br. 



Awned Sedge. (Fig. 703.) 



Carex aristata R. Br. Frank. Journ. 751. 1823. 

 Carex trichocarpa var. aristala Bailey, Coult. Hot. 



Gaz. 10: 294. 1885. 



Culms stout erect, smooth or roughish above, 

 sharp-angled, 2-5 tall. Leaves elongated, 2^"- 

 5" wide, more or less scabrous, often pubescent 

 beneath and on the sheaths; bracts similar, the 

 lower often overtopping the culm; staminate spikes 

 as in the preceding species; pistillate spikes 3-5, 

 remote, cylindric, sessile or the lower short -stalked, 

 loosely flowered at the base, dense above, i'-4' 

 long, sometimes 8" in diameter; perigynia ascend- 

 ing, conic, glabrous, conspicuously many-ribbed, 

 4 // -6 // long, gradually tapering into the conspicu- 

 ously 2-toothed beak, the teeth divergent; scales 

 oblong-lanceolate, rough-awned, thin-margined, 

 one-half to two-thirds as long as the perigynia.* 



In bogs, Ontario to the Northwest Territory, Ni-\v 

 York, Michigan, Utah and Oregon. June-Aug. 



